We are using the HSSF Api's from RPGLE on the system i5 (AS400), and the SUMIF formula does not work when it references cells on another sheet: We create a sheet "Detail", containing data, and then create a sheet "Summary" with formulas such as "SUMIF(Detail!$A2:$A6,$A2,Detail!$E2:$E6)". The cell value is zero when spreadsheet is first openened, and only becomes correctly populated when F2 is pressed on the cell, and then enter. (F9 has no effect). Note: The SUMIF function works fine on the "Detail" sheet when refering to a range of cells on the same sheet, so it must be the combination of the SUMIF function, and the sheet reference
Probably due to a bug with token operand classes fixed in bug 44675.